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Korea-Australia rheology journal v.22 no.1, 2010년, pp.21 - 29   SCIE
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The role of interfacial elasticity on the rheological behavior of polymer blends

Silva, Jorge M.    (Department of Polymer Engineering, I3N-Institute of Nanostructures, Nanomodelling and Nanofabrication, University of Minho   ); Machado, Ana V.    (Department of Polymer Engineering, I3N-Institute of Nanostructures, Nanomodelling and Nanofabrication, University of Minho   ); Moldenaers, Paula    (Department of Chemical Engineering, Katholieke Universiteit Leuven   ); Maia, Joao M.    (Department of Polymer Engineering, I3N-Institute of Nanostructures, Nanomodelling and Nanofabrication, University of Minho  );
  • 초록

    In this work, the influence of interfacial modification on the rheological behavior of polymer blends was investigated. First, commercial blends of polyamide-6 and ethylene-propylene copolymer, PA6/EPM, noncompatibilized and compatibilized with EPM grafted with maleic anhydride, with high viscosity and elasticity ratios were studied. The observation of the morphology frozen during extension tests seemed to indicate that the droplets of the highly compatibilized blends are slightly deformed unlike those of the noncompatibilized ones. Stress relaxation experiments, both in shear and extension, showed that the introduction of the compatibilizer leads to the appearance of a second very long relaxation mechanism, the question then being what is its cause. In order to better understand the relative importance of relaxation of the droplets and relaxation of the interfaces in this kind of compatibilized blends, model high viscosity ratio blends of optically transparent materials, in this case poly(methylmethacrylate), PMMA, polystyrene, PS, and oxazoline-modified polystyrene, PSOX were prepared. This allows Small Angle Light Scattering (SALS) to be used in dilute blends to complement the rheometrical characterization and thus evaluate the deformation of the droplets in transient shear flows. In these blends there is also an additional longer relaxation time present but no changes in the morphology can be readily observed. In addition, the blend with functionalized PS shows a droplet deformation in the vorticity direction, which is an indication of an increase in the elasticity of the interface. Thus, our findings seem to indicate that the main factor behind the increase in relaxation time stress relaxation at and in the interfaces and not droplet deformation and recovery. The role of the elasticity of the interface became quite clear when PP/EVOH blends, non-compatibilized and compatibilized with $Na^+$ were tested. In this case the elasticity of the interface is negligible and it was observed that the compatibilization does not alter significantly the relaxation behavior after a step deformation.


  • 주제어

    interfacial elasticity .   polymer blends .   compatibilization .   stress relaxation.  

  • 참고문헌 (39)

    1. Hobbie, E. K. and K. B. Migler, 1999, Vorticity elongation in polymeric emulsions, Physical Review Letters 82, 5393. 
    2. Koning, C., M. Van Duin, C. Pagnoulle and R. Jerome, 1998, Strategies for compatibilization of polymer blends, Progress in Polymer Science 23, 707. 
    3. Macaubas, P. H. P., N. R. Demarquette and J. M. Dealy, 2005, Nonlinear viscoelasticity of PP/PS/SEBS blends, Rheol. Acta 44, 295. 
    4. Maia, J. M., J. A. Covas, J. M. Nobrega, T. F. Dias and F. E. Alves, 1999, Measuring uniaxial extensional viscosity using a modified rotational rheometer, J. Non-Newtonian Fluid Mech. 80, 183. 
    5. Migler, K. B., 2000, Droplet vorticity alignment in model polymer blends, J. Rheol. 44, 277. 
    6. Oosterlinck, F., M. Mours, H. M. Laun and P. Moldenaers, 2005, Morphology development of a polystyrene/polymethylmethacrylate blend during start-up of uniaxial elongational flow, J. Rheol. 49, 897. 
    7. Van Puyvelde, P., Z. Oommen, P. Koets, G. Groeninckx and P. Moldenaers, 2003, Effect of reactive compatibilization on the interfacial slip in nylon-6/EPR blends, Polym. Eng. Sci. 43, 71. 
    8. He, Y., B. Zhu and Y. Inoue, 2004, Hydrogen bonds in polymer blends, Progress in Polymer Science 29, 1021. 
    9. Borschig, C., B. Fries, W. Gronski, C. Weis and C. Friedrich, 2000, Shear-induced coalescence in polymer blends - simulations and rheo small angle light scattering, Polymer 41, 3029. 
    10. Gramespacher, H. and J. Meissner, 1997, Melt elongation and recovery of polymer blends, morphology, and influence of interfacial tension, J. Rheol. 41, 27. 
    11. Asthana, H. and K. Jayaraman, 1999, Rheology of reactively compatibilized polymer blends with varying extent of interfacial reaction, Macromolecules 32, 3412. 
    12. Sailer, C. and U. A. Handge, 2007, Melt viscosity, elasticity, and morphology of reactively compatibilized polyamide 6/styreneacrylonitrile blends in shear and elongation, Macromolecules 40, 2019. 
    13. Abad, M. J., A. Ares, L. Barral, J. Cano, F. J. Diez, S. Garcia-Garabal, J. Lopez and C. Ramirez, 2004, Use of a sodium ionomer as a compatibilizer in polypropylene/high-barrier ethylene-vinyl alcohol copolymer blends: The processability of the blends and their physical properties, J. Appl. Polym. Sci. 94, 1763. 
    14. Datta, S. and D. Lohse, Polymeric compatibilizers (Hanser, Munich, 1996a). 
    15. Mechbal, N. and M. Bousmina, 2004, Uniaxial deformation and relaxation of polymer blends: relationship between flow and morphology development, Rheol. Acta 43, 119. 
    16. Jacobs, U., M. Fahrlander, J. Winterhalter and C. Friedrich, 1999, Analysis of Palierne's emulsion model in the case of viscoelastic interfacial properties, J. Rheol. 43, 1495. 
    17. Barroso, V. C., J. A. Covas and J. M. Maia, 2002, Sources of error and other difficulties in extensional rheometry revisited: commenting and complementing a recent paper by T. Schweizer, Rheol. Acta 41, 154. 
    18. Van Puyvelde, P., S. Velankar and P. Moldenaers, 2001, Rheology and morphology of compatibilized polymer blends, Curr. Opin. Coll. Int. Sci. 6, 457. 
    19. Riemann, R. E., H. J. Cantow and C. Friedrich, 1997, Interpretation of a new interface-governed relaxation process in compatibilized polymer blends, Macromolecules 30, 5476. 
    20. Huo, Y. L., G. Groeninckx and P. Moldenaers, 2007, Rheology and morphology of polystyrene/polypropylene blends with in situ compatibilization, Rheol. Acta 46, 507. 
    21. Mechbal, N. and M. Bousmina, 2007, Effect of copolymer addition on drop deformation during uniaxial elongation and during relaxation after cessation of flow, Macromolecules 40, 967. 
    22. Barroso, V. C. and J. M. Maia, 2002, Evaluation by means of stress relaxation (after a step strain) experiments of the viscoelastic behavior of polymer melts in uniaxial extension, Rheol. Acta 41, 257. 
    23. Handge, U. A. and P. Potschke, 2004, Interplay of rheology and morphology in melt elongation and subsequent recovery of polystyrene/poly(methyl methacrylate) blends, J. Rheol. 48, 1103. 
    24. Yee, M., P. S. Calvao and N. R. Demarquette, 2007, Rheological behavior of poly(methyl methacrylate)/polystyrene (PMMA/PS) blends with the addition of PMMA-ran-PS, Rheol. Acta 46, 653. 
    25. Ares, A., J. Silva, J. Maia, L. Barral and M. J. Abad, 2009, Rheomechanical and morphological study of compatibilized PP/EVOH blends, submited to Rheologica Acta. 
    26. Iza, M., M. Bousmina and R. Jerome, 2001, Rheology of compatibilized immiscible viscoelastic polymer blends, Rheol. Acta 40, 10. 
    27. Lin, B., F. Mighri, M. A. Huneault and U. Sundararaj, 2005, Effect of premade compatibilizer and reactive polymers on polystyrene drop deformation and breakup in simple shear, Macromolecules 38, 5609. 
    28. Silva, J., A .V. Machado, P. Moldenaers and J. M. Maia, The effect of interfacial properties on the deformation and relaxation behavior of PMMA/PS blends, J. Rheol., 2009, submitted. 
    29. Utracki, L. A., 1983, Melt Flow of Polymer Blends, Polym. Eng. Sci. 23, 602. 
    30. Fahrlander, M., M. Bruch, T. Menke and C. Friedrich, 2001, Rheological behavior of PS-melts containing surface modified PMMA-particles, Rheol. Acta 40, 1. 
    31. Vermant, J., S. Vandebril, C. Dewitte and P. Moldenaers, 2008, Particle-stabilized polymer blends, Rheol. Acta 47, 835. 
    32. Silva, J., A. V. Machado and J. M. Maia, 2007, Rheological behavior of compatibilized and non-compatibilized PA6/EPM blends, Rheol. Acta 46, 1091. 
    33. Mighri, F. and M. A. Huneault, 2006, In situ visualization of drop deformation, erosion, and breakup in high viscosity ratio polymeric systems under high shearing stress conditions, J. Appl. Polym. Sci. 100, 2582. 
    34. Van Hemelrijck, E., P. Van Puyvelde, S. Velankar, C. W. Macosko and P. Moldenaers, 2004, Interfacial elasticity and coalescence suppression in compatibilized polymer blends, J. Rheol. 48, 143. 
    35. Shi, D., Z. Ke, J. H. Yang, Y. Gao, J. Wu and J. H. Yin, 2002, Rheology and morphology of reactively compatibilized PP/ PA6 blends, Macromolecules 35, 8005. 
    36. Datta, S. and D. Lohse, Polymeric compatibilizers, uses and benefits in polymer blends (Hanser, Munich, 1996b). 
    37. Graebling, D., R. Muller and J. F. Palierne, 1993, Linear Viscoelastic Behavior of Some Incompatible Polymer Blends in the Melt - Interpretation of Data with a Model of Emulsion of Viscoelastic Liquids, Macromolecules 26, 320. 
    38. Utracki, L. A., Encyclopaedic dictionary of commercial polymer blends (ChemTec, Toronto, 1994). 
    39. Barroso, V. C., S. P. Ribeiro and J. M. Maia, 2003, Stress relaxation after a step strain in uniaxial extension of polyisobutylene and polyethylene, Rheol. Acta 42, 345. 

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